Tubular packaging for door knob assembly



FIG. 1 is a perspective view of tubular packaging for a door knob assembly;

FIG. 2 is a top view thereof (the bottom view being identical to the top);

FIG. 3 is a front view thereof (the back, right, and left side views being identical to the front); and,

FIG. 4 is an exploded perspective view thereof. 

The ornamental design for tubular packaging for door knob assembly, as shown and described. 